Scraper attachment for plow-colters.



PATENTBD JAN.6,190.3.

v R. E. MILLER.

SURAPER ATTACHMENT FOR PLOW GOLTERS. APPLICATION FILED JULY 31, 1902 noMODEL.

wane/com UNITED STATES ATENT Fries;

SCRAPER ATTACHMENT FOR PLOW-COLTERS.

SPECIFICATIDN forming part of Letters Patent No. 717,698, dated January6, 1903. Applicatioii filed July 31, 1902 Serial No. 117,903, (Nomodel.)

To 11% whom it may concern: 1

Be it known that I, ROBERT ELDER MILLER, a citizen of the United States,residing at Grandin, in the county of Cass and State of North Dakota,have invented certain newand useful Improvements in Scraper Attachmentsfor.

PloW-Colters, of which the following is a specification.

My invention relates to plow-colters, and more especially to thecombination, with a rolling colter, of my novel scraper-attachment.

The object of my invention is to provide a novel and practical scraperattachment to rolling colters for the purpose of scraping the sides ofthe colter clear of soil, whereby the colter of a plow is made to workmore perfectly than when it is not provided with my novel scraperattachment. 7

My invention consists of two scrapers supported on arms pivoted at thesides of the circular colter, whereby the scrapers are applied to eachside of the colter and-in a position to shave sticking dirt downward and0% from the revolving colter, and thereby clear the colter-blade freefrom sticking dirt.

In the drawings forming part of this specification similar letters ofreference denote similar parts in both illustrations.

Figure 1 presents a top plan view looking downward upon the colter andscraper at-- tachment. Fig. 2 presents a side elevation view of thecolter and of my scraper attachment.

In carrying out the invention scrapers F are attached to the rear endsof the arms E, which arms E are pivoted at E and may be secured upon thepivot by the keys shown at I or in any other suitable manner, andbetween the forward ends of the arms E,'I placea coiled spring G, whichcoiled spring is held in position by pins H and H, placed on the rearends of the said pivoted arms, and the said coiled spring is adapted tospring outwardly and spread the said rear ends of the arms E, which armsE are pivoted at E upon the supports 0, which supports 0 are connectedover the lower ends of the swinging arms B, which swinging arms B arepivoted at D to a support upon the plow, and the rolling colt'er Arevolvesin the usual manner on the centers J.

In constructing my colter attachment I find it is best to have thescrapers pivoted at F; but my colter-scraping attachment will work ifconstructed with a stiffjoint at F.

Having fully described my invention, what I claim is 1. With aplow-colter centered on swinging arms, the combination of scraperspositioned to contact with the rear sides of the rolling colter, saidscrapers pivoted upon the rear ends of arms pivoted on supports placedover the center pivot of the rolling colter, said pivoted arms arrangedto be spread apart at their forward ends by the force of a spring.

3. With a plow-colter centered on swinging arms, the combination ofscrapers positioned to contact with the rear sides ot the rolling colterand carried upon the rear ends of arms pivoted upon supports placed overthe center pivot of the rolling colter and arranged to be spread apartat their forward ends by the force of a coiled spring placed betweentheir forward ends.

4. Combined with a plow-colter centered on swinging arms, scraperspositioned to contact with the rear sides of the rolling colter, saidscrapers supported upon swinging arms, and arranged to spring againstthe sides of the rolling colter.

5. Combined with a plow-colter centered onswinging arms, scraperspositioned to contact 'With the rear sides of the rolling colter, saidscrapers connected to the swinging arms.

In testimony whereof I affix my signature in presence of two witnesses.

ROBERT ELDER MILLER.

Witnesses:

BENJ. CAMERON, FRANK P. EMERY.

